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5f71fe6973
Since E4X implementation needs to know the activation scope for tracking of default namespaces, previously an elaborated schema was added to set/restore the activation scope which relied on the fact that scrip and function with activation record should always call special entry/exit functions.
But that does not work for functions without activation records since they never call any special entry/exit pairs. So if application call such function directly, the function would not store its top scope anywhere and the E4X subsystem would not be able to get E4X library object.
The patch fixes with introduction of 2 functions, hasTopCall and doTopCall to ScriptRuntime and adding the following code prefix to each implementation of Callable.call that can start execution of script code:
public Object call(Context cx, Scriptable scope,
Scriptable thisObj, Object[] args)
throws JavaScriptException
{
// Prefix start
if (!ScriptRuntime.hasTopCall(cx)) {
return ScriptRuntime.doTopCall(this, cx, scope, thisObj, args);
}
// Prefix end
...
In this way there is always registered top scope during script execution and the previous elaborated schema became unnecessary so I reverted that part to almost pre-E4x state.
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| README.html | ||
<html> <!-- - The contents of this file are subject to the Netscape Public - License Version 1.1 (the "License"); you may not use this file - except in compliance with the License. You may obtain a copy of - the License at http://www.mozilla.org/NPL/ - - Software distributed under the License is distributed on an "AS - IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or - implied. See the License for the specific language governing - rights and limitations under the License. - - The Original Code is Rhino code, released - May 6, 1999. - - The Initial Developer of the Original Code is Netscape - Communications Corporation. Portions created by Netscape are - Copyright (C) 1998-1999 Netscape Communications Corporation. All - Rights Reserved. - - Contributor(s): - Norris Boyd - - Alternatively, the contents of this file may be used under the - terms of the GNU Public License (the "GPL"), in which case the - provisions of the GPL are applicable instead of those above. - If you wish to allow use of your version of this file only - under the terms of the GPL and not to allow others to use your - version of this file under the NPL, indicate your decision by - deleting the provisions above and replace them with the notice - and other provisions required by the GPL. If you do not delete - the provisions above, a recipient may use your version of this - file under either the NPL or the GPL. --> <body> <h1> <span CLASS=LXRSHORTDESC> Rhino: JavaScript in Java<p> </span> </h1> <span CLASS=LXRLONGDESC> Rhino is an implementation of JavaScript in Java. Documentation can be found <a href="http://www.mozilla.org/rhino/index.html">here</a>. </span> </body> </html>